7. Endometriosis and Adenomyosis Flashcards
(107 cards)
What is endometriosis?
Endometriosis is the presence of tissue similar to the endometrium outside the uterine cavity. Diagnosis requires 2 of the following: endometrial glands, endometrial stroma, and haemosiderin pigment. Deeply infiltrating disease can affect organs like the vagina, bowel, bladder, or ureters.
What does the term “endometriosis” mean?
It’s the presence of endometrial-like tissue outside the uterine cavity.
What do we need to diagnose endometriosis?
2 of these 3 components: endometrial glands, endometrial stroma, and haemosiderin pigment.
Where can deeply infiltrating endometriosis affect?
It may affect the uterosacral ligaments, vagina, bowel, bladder, or ureters.
What causes endometriosis?
The cause is unknown, but there are several theories.
What is the Implantation Theory?
Retrograde menstruation may cause menstrual blood to flow into the pelvic cavity.
What happens after retrograde menstruation?
Endometrial fragments may implant and form deposits in the pelvic cavity.
Does this explain all cases of endometriosis?
No, not all women with retrograde menstruation develop endometriosis.
What is the Coelomic Metaplasia theory?
Coelomic cells may transform into Müllerian epithelium, leading to endometriosis.
How does this theory explain endometriosis in unusual places?
This theory may explain endometriosis in areas like the limbs, where these cells may have been isolated during fetal development
Can endometriosis spread through the lymphatic system?
Yes, endometrial tissue can be found in the lymphatic system.
Can endometriosis spread through the blood?
Yes, blood-borne spread can occur, which may explain deposits in organs like the lungs.
Is there a genetic link to endometriosis?
Yes, endometriosis is more common in close relatives.
What is the prevalence in close relatives?
6.9%, compared to 1% in the general population.
Do immune factors contribute to endometriosis?
Yes, immune responses may be impaired in women with endometriosis.
How does impaired immunity affect endometriosis?
It may allow endometrial tissue to implant and grow outside the uterus.
Are there other immune system changes
Increased inflammation and cytokines can promote implantation and growth of endometriotic tissue.
Can surgery contribute to endometriosis?
Yes, accidental transplantation of endometrial tissue during surgery can cause endometriosis.
What other menstrual factors increase risk?
Cryptomenorrhoea, frequent menses, and menorrhagia are associated with higher risk.
What other menstrual factors increase risk?
Cryptomenorrhoea, frequent menses, and menorrhagia are associated with higher risk.
Is endometriosis affected by hormones?
Yes, endometriotic tissue is hormone-sensitive.
What happens when there is no ovarian activity?
Endometriotic tissue may regress.
Does endometriotic tissue produce estrogen?
Yes, it has aromatase activity, converting androgens into estrogen locally.
Can endometriotic tissue cause pain?
Yes, it may contain nerve tissue, contributing to pain.